Grossmann, P.
K- P --> KBAR0 PI- P
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Partial Wave Analysis of $\bar{K} N \to \bar{K}^* N$ Between 1830-{MeV} and 2170-{MeV} Center-of-mass Energy Including New Data Below 1960-{MeV}

The Rutherford-London collaboration Cameron, W. ; Franek, B. ; Gopal, G.P. ; et al.
Nucl.Phys.B 146 (1978) 327-367, 1978.
Inspire Record 131336 DOI 10.17182/hepdata.34833

We present data for the single-pion production final states K 0 π − p, K − π 0 p and K − π + n from K − p interactions at 11 c.m. energies between 1775 and 1957 MeV. Using the K 0 π − p events the branching ratio (K s 0 → π + π − /K s 0 → all) has been determined to be 0.657 ± 0.011. New values have also been determined for the masses and widths of the K ∗0 (890) and the K ∗− (8990). These give a value of 1.5 ± 1.5 MeV for the electromagnetic mass splitting of the K ∗ . Differential cross sections and the spin-density matrix elements have been extracted for the reactions K − p → K ∗− p and K − p → K ∗0 n . An energy dependent partial-wave analysis of the K ∗ N channel from threshold up to 2170 MeV c.m. energy has been carried out yielding values for 17 resonant amplitudes for the expected Y ∗ 's and a new resonance, the S01(2030).

11 data tables
Table 1

No description provided.

Table 2

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Table 3

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A Study of Noncharge Exchange anti-K0 pi- Production in the Reaction K- p --> anti-K0 pi- p at 4.2-GeV/c

The AMSTERDAM-CERN-NIJMEGEN-OXFORD collaboration Engelen, J.J ; Holwerda, M.J. ; Kittel, E.W. ; et al.
Nucl.Phys.B 134 (1978) 14-30, 1978.
Inspire Record 134670 DOI 10.17182/hepdata.35138

The K π − system produced in the reaction K p → K 0 π − p at 4.2 GeV/ c is studied using high-statistics bubble-chamber data. The spin-parity structure is analysed as a function of the K 0 π − mass up to 1.52 GeV. Production of K ∗ (890) and K ∗ (1420) is observed in helicity-0 and helicity-1 states. Contributions of natural and unnatural parity exchange are present. Considerable S-wave production is observed over the whole mass region considered. We also study the t ′ dependence of the K ∗ (890) and K ∗ (1420) amplitudes. A comparison of our results on K ∗ (890) production with the results of an analysis of charge-exchange K ∗ (890) production, allows the separation of I = 0 and I = 1 exchange amplitudes. Some qualitative remarks are made concerning K ∗ (1420) production.

2 data tables
Table 1

No description provided.

Table 2

PARTIAL WAVE ANALYSIS ASSUMING SPIN-COHERENCE TO OBTAIN SPIN-PARITY STRUCTURE AND T DEPENDENCE OF P-WAVE AND D-WAVE AMPLITUDES.